E.I. du Pont de Nemours and Company

Definition and stakes

Portrait of Stanley Forman Reed Stanley Forman Reed United States v. E. I. Du Pont De Nemours and Company…

The 'market' which one must study to determine when a producer has monopoly power will vary with the part of commerce under consideration. The tests are constant. That market is composed of products that have reasonable interchangeability for the purposes for which they are produced-price, use and qualities considered. While the application of the tests remains uncertain, it seems to us that du Pont should not be found to monopolize cellophane when that product has the competition and interchangeability with other wrappings that this record shows.
Source: Wikisource

William J. Brennan, Jr. United States v. E. I. Du Pont De Nemours and Company…

United Shoe Machinery Corp., D.C., 110 F.Supp. 295, 303, affirmed per curiam, 347 U.S. 521, 74 S.Ct. 699, 98 L.Ed. 910. 'Determination of the competitive market for commodities depends on how different from one another are the offered commodities in character or use, how far buyers will go to substitute one commodity for another.' United States v. E.I. du Pont de Nemours & Co., 351 U.S. 377, 393, 76 S.Ct.
Source: Wikisource

Portrait of Felix Frankfurter Felix Frankfurter United States v. E. I. Du Pont De Nemours and Company…

For they merely demonstrate, that during the period covered by the complaint, du Pont was a 'good monopolist,' i.e., that it did not engage in predatory practices and that it chose to maximize profits by lowering price and expanding sales. Proof of enlightened exercise of monopoly power certainly does not refute the existence of that power.
The majority opinion purports to reject the theory of 'interindustry competition.' Brick, steel, wood, cement and stone, it says, are 'too different' to be placed in the same market.
Source: Wikisource

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